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CATL Unveils Dedicated Sodium-Ion Battery for Energy Storage: 300+Ah, 15,000 Cycles, Marking the Commercialization Year of Sodium-Ion Battery

Release time:

2026-04-04

CATL Unveils Dedicated Sodium-Ion Battery for Energy Storage: 300+Ah, 15,000 Cycles, Marking the Commercialization Year of Sodium-Ion Battery

Core Summary
At the 14th Energy Storage International Summit and Exhibition (ESIE 2026) opening on April 1, 2026, CATL publicly unveiled its dedicated sodium-ion battery for energy storage for the first time, marking the official entry of sodium-ion battery technology into the commercialization phase. With its outstanding technical specifications and platform-based design, this product is expected to complement lithium-ion batteries in large-scale energy storage applications.

Product Specifications

Parameter	Data
Capacity	300+Ah
Energy Conversion Efficiency	97%
Cycle Life	15,000+ cycles
Application Scenarios	2-8 hour large-scale energy storage & AIDC energy storage
Commercialization Timeline	Within 2026

Technical Highlights

Platform-Based Design: Adopts the same casing design as CATL's 587Ah lithium-ion battery, enabling maximum system compatibility between lithium and sodium batteries, reducing system integration complexity.
Long Cycle Life: Over 15,000 cycles, meeting the full lifecycle requirements of large-scale energy storage power stations.
High Efficiency: 97% energy conversion efficiency, approaching lithium battery levels, ensuring economic viability for energy storage systems.
Wide Temperature Adaptability: Sodium-ion batteries naturally exhibit excellent high and low temperature performance, suitable for energy storage applications across various climate conditions.

CATL's Energy Storage Business Outlook

During the exhibition, CATL's General Counsel revealed that the company's current business mix is approximately 80% power batteries and 20% energy storage batteries. Over the next three years, this is expected to adjust to 50%:50%, after which the energy storage business is projected to surpass power batteries, becoming the company's largest business segment.

This outlook reflects CATL's strong confidence in the rapid growth of the global energy storage market and signals the company's accelerated strategic transition toward a dual-driven "power + storage" model.

Industry Significance

Sodium-ion batteries, with their abundant sodium resources, low cost potential, high safety, and wide temperature adaptability, are widely regarded as an important complement to lithium-ion batteries. CATL's launch of a 300+Ah large-capacity sodium-ion battery for energy storage—achieving cycle life and energy efficiency comparable to lithium batteries—is expected to achieve large-scale application in the following scenarios:

Large-scale grid-side energy storage
Commercial and industrial energy storage
AIDC (Artificial Intelligence Data Center) backup power
Cost-sensitive mid-to-long duration energy storage projects

With the push from industry leaders like CATL, 2026 is poised to become the "commercialization year" for sodium-ion battery large-scale applications. A diversified energy storage technology landscape characterized by sodium-lithium complementarity is rapidly taking shape.